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| ZSM-5催化剂在乙醇脱水反应中的失活与再生 | |
| 引用本文： | 周丽雯,王飞,罗漫,肖文德,程晓维,龙英才. ZSM-5催化剂在乙醇脱水反应中的失活与再生[J]. 石油化工, 2008, 37(4): 333 |
| 作者姓名： | 周丽雯 王飞 罗漫 肖文德 程晓维 龙英才 |
| 作者单位： | 1. 上海交通大学,化学化工学院,上海,200240 2. 华东理工大学,联合反应工程研究所,上海,200237 3. 复旦大学,化学系上海市分子催化与新材料重点实验室,上海200433 |
| 摘 要： | 在固定床反应器中进行了ZSM-5分子筛催化乙醇脱水生成乙烯反应的积碳失活实验,采用X射线衍射、热重、傅里叶变换红外光谱、低温氮吸附和核磁共振等方法对催化剂进行了表征。结果表明,在乙醇脱水反应中,催化剂表面的积碳导致分子筛微孔堵塞是造成催化剂失活的主要原因,积碳物种主要是带有双键的聚合态化合物(或芳香族化合物)。再生后的催化剂仍具有良好的活性和稳定性,在1000h的反应过程中,乙醇转化率始终在99.5%以上,乙烯收率也保持在98%以上。同时再生过程未改变分子筛中铝的状态。 |
| 关 键 词： | ZSM-5分子筛 催化剂 乙醇脱水 乙烯 积碳 失活 再生 |
Deactivation and Regeneration of ZSM-5 Zeolite Catalysts for Ethanol Dehydration |
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| Zhou Liwen,Wang Fei,Luo Man,Xiao Wende,Cheng Xiaowei,Long Yingcai. Deactivation and Regeneration of ZSM-5 Zeolite Catalysts for Ethanol Dehydration[J]. Petrochemical Technology, 2008, 37(4): 333 | |
| Authors: | Zhou Liwen Wang Fei Luo Man Xiao Wende Cheng Xiaowei Long Yingcai |
| Affiliation: | Zhou Liwen1,Wang Fei2,Luo Man1,Xiao Wende1,Cheng Xiaowei3,Long Yingcai3(1.School of Chemistry , Chemical Technology,Shanghai Jiao Tong University,Shanghai 200240,China,2.UNILAB Research Center of Chemical Reaction Engineering,East China University of Science , Technology,Shanghai 200237,3.Department of Chemistry , Shanghai Key Laboratory of Molecular Catalysis , Innovative Materials,Fudan University,Shanghai 200433,China) |
| Abstract: | Deactivation and regeneration experiments for ZSM-5 zeolite during ethanol dehydration to ethylene were carried out in a fixed-bed reactor.The catalyst was characterized by XRD,N2 adsorption techniques,TG-DTG,FTIR and NMR.The results show that deactivation of ZSM-5 is due to the coke forming on the catalyst surface which block the pore mouth of zeolite channels for ethanol dehydration.The coke consisted mainly of polymer with double bond(or aromatic).Regeneration of ZSM-5 catalyst was studied at appropriate... |
| Keywords: | ZSM-5 zeolite catalyst ethanol dehydration ethylene coking deactivation regeneration |
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